Question detail
For Soluble salts, which exam wording answer best supports this Unit 4.4 objective: Describe safety precautions when using acids and heating solutions during salt preparation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of acids
Question
- A. Always wear safety goggles - correct exam wording for safety
- B. Wrong exam wording: confuses safety with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Soluble salts
- D. Wrong reaction link: does not support Describe safety precautions when using acids and heating solutions during salt preparation
Answer
The correct option is Always wear safety goggles - correct exam wording for safety.
Explanation
The correct option is Always wear safety goggles - correct exam wording for safety. Always wear safety goggles - correct exam wording for safety is correct because it directly supports the approved learning objective to describe safety precautions when using acids and heating solutions during salt preparation. This exam wording variant asks students to separate safety from similar Unit 4.4 chemical-change ideas. The reasoning belongs to Soluble salts within Reactions of acids, so it should not be confused with nearby ideas about acids, alkalis, bases, oxidation, reduction, displacement, reactivity, electrolysis, electrodes, ions, pH, or salt preparation unless those are named in the objective. Use the focus term safety to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.4 Chemical changes. Keep acid, alkali and base distinct; keep oxidation and reduction distinct; do not mix reduction with displacement; keep electrolysis separate from electroplating; distinguish anode from cathode, positive ions from negative ions, oxidation state from ionic charge, and strong acid from concentrated acid. The other options are weaker because they either use the wrong reaction type, wrong ion, wrong electrode, wrong acid-base distinction, vague wording, or the wrong chemical-change context.
Common mistake
Ignoring Safety Equipment
Students often forget to mention the use of safety goggles and gloves when handling acids and heating solutions.
Always include the necessity of wearing safety goggles and gloves to protect against splashes and burns when working with acids and heating solutions.
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